When: Today, just before 6 a.m. after Monday's Race 1 was postponed. Another postponement would shift the first race to Friday.

Where: Valencia, Spain

The participants: The challenger, BMW Oracle Racing, sailing under the flag of Golden Gate Yacht Club of San Francisco, has a trimaran called USA. The defender, Alinghi Racing, sailing for the Swiss Société Nautique de Geneve, has a catamaran called Alinghi.

The races: Best-of-three format, two courses.

TV: None live in the United States; it will be streamed live at www.americascup.com.